# Manuals/calci/DSTDEV

DSTDEV (Array,Field,Criteria)

where,

• is the range of cells that makes up the list or database
• shows which column is used in the function and
• is the range of cells that contains the specified criteria.
• DSTDEV(), estimates the standard deviation based on a sample of selected database entries.

## Description

DSTDEV (Array,Field,Criteria)

• Standard deviation shows the variation of data points from the average value.
• If data points are close to mean value, a low standard deviation is observed. If data points are spread out from the mean value, a high standard deviation is observed.
• A argument can be expressed as "Salary" (a column name) or 3(position of the column).
• can be any range on the Calci with minimum of one column and at least one row indicating the condition.
• The columns should not overlap the list of data.

## Examples

Consider the following table with Employee details as input to DSTDEV function.

 A B C D 1 Name Age Salary Age 2 <40 >8000 >32 3 >30 4 Name Age Salary 5 John 34 5500 6 Bill 35 6500 7 Clark 29 7000 8 Bob 45 9000 9 Susan 37 4000 10 Jill 45 8000
=DSTDEV(A4:C10,"Age",B1:B3)   : Calculates the standard deviation for 'Age' column
in the range A4 to C10, for the cells with 40>Age>30.
Returns 5.214829282387338 as a result. =DSTDEV(A4:C10,3,D1:D2) : Calculates the standard deviation for 'salary'
in the range A4 to C10, for the cells with Age>32.
Returns 1981.161275615895 as a result.

DSTDEV